A West York statute prohibited businesses that sell certain products, including hardware, from operating on consecutive Saturdays and Sundays. The law’s stated purpose was to provide workers with at least one day of rest for the sake of public health. A hardware store, Redi-Mart, Inc. (defendant), was open for business on both Saturday and Sunday. The London Retail Merchants Association (plaintiff) sought an injunction against Redi-Mart to prevent the business from operating in violation of the statute. Redi-Mart alleged that the statute violates due process and equal protection under the state and federal constitutions by arbitrarily discriminating against the ability of some stores, but not others, to sell their goods on Saturdays and Sundays. The trial court found the statute unconstitutional and denied the injunction. The London Retail Merchants Association appealed.